Valve for internal-combustion engines.



S. UPTON. VALVE FOR INTERNAL GOMBUSTION ENGINES. nrmu'non FILED swr.15,1s1s.

* 1,101,590. Patented June 30, 1911 2i. @-55935 "L55 2 fave/11H3@ L. f, fi

` citizen of the United States, and a resident UNITED STATES PATENT oEEIoE.

SAMUEL UPToN, or ARLINGTON HEIGHTS, MAssAoEUsETTs, AssIsNoB, To SIMON P.

MAcAskI-LL, oF CAMBRIDGE, MASSACHUSETTS.

VALVE FOR INTERNAL-COMBUSTION ENGINES.

Patented June 30, 1914. r Application filed September 15, 19173. Serial No. 783,738.

j 101,590, Specification of Letters Patent.

T0 all iii/iam if may concern: l barrel valve9has'reached its seat 11 and cut Be it known that l, SAMUEL UrToN, a oli' further such escape, practically no more exhaust remains in the cylinder. Then, as the puppet valve descends farther, the clapper valve I3 goes with it and opens the lower end of the barrel valve 9. This permits the passage of the charge to the cylinder until the moment the upstroke of the puppet valve brings the chipper valve 13 into engagement with its seat at the lower end of the barrel valve 9. The puppet valve now quickly returns to its seat 4, and the 00mpi'ession stroke of the cylinder piston be gms.

It sometimes happens upon the return stroke of the puppet valve, and when the sainey has reached substantially the position shown in Fig. l, that a premature explosion oicurs iii the cylinder, caused hy the latters getting overlieated, and in other ways. \\'hen this oocurs, the pressure 0f the exploiting gases roines against both the barrel valve and against the elapper, en'd forces both up togetherJ thereby opening the Way to the oxliaust`eonduit. This is permitted by the sliding action of the chipper valve on the valve stein 5.

ln pre\ ions devices of the kind, what corof Arlington Heights, county of Middlesex, I and Commonwealth of Massachusetts, have l invented certain new and useful Improvei ments in Valves for internal-Combustion Engines, of which the following is a full and exact description.

One ofthe great daiigeis found to exist in connection with eei'tain types of puppet valves employed in explosion engines is that ofii bacl(-fiies resulting in the ignition or other disturbance ofthe rarbureter`s edntents; and the object of this invention is the construction of improvements in details ealcnlated to remove all possibility of suc-h accidents.

Referring to the drawings foi-nilo;r part of this specification, Figure l is a nenti-al lo gitudinal section of a puppet valve enibiyin 'my improvements. Fig. 9 isa substantiziy similar section showing the puppet vilve half open.

The reference numeral 1 designates part of the cylinder of au internal eoinbustuiii engine, and 2 thi` valve casing screwed into the head of sa id cylindon The puppet valve 3 which engages thi` seat 4 in closing the valve opening duriufr the explosions in the cylinder, is carried y the stein ."i eontrolled in its reeiproration by the helical spring G and the roola-r arm 7 iu the. usual manner. Slidable on saidslem is a bai-rel willi (hi` valve stein. Consequently, when such backfire oeeurs the barrel rises away troni the chipper va ve and so opens an unobstructed passage to the eiirbureter. The hot exhaust thus admitted to the earbureter valve 9 whose lower end is formed with an instantly igniles the latters contents, and ii outwardly projecting llange l0 courting destructive explosion is the result. In my i ith the seat ll and adapted to rest upon thi-v ronstiuetion` on the other hand, the exposed lliitterat the sinne time that the upper end of surface of the chipper valve being greater' the' barrel valve wholly uueloses the intake .than that of the barrel valve, and then heripenings l2. 'lhe lower rnd of said barrel ing nothing to interfere with the formers is closed by a chipper valve l?! slidahle on the rising with the latter, it is absolutely imposstem 5-.und pressed upward by tho puppet slblr for the barrel valve to escape from the valve B; a helical spring i4 serving to press chipper valve und so give a dangerous pas said barrel downward. sagrivay to the earbureter.

Fig l .shows the puppet valve 3 approxiylhiI purpose in providing the lower edge mately half open and just far enough to of the barrel valve 9 with n n outwardly pro` permit the barrel valve 9 to descend to its )erting Harige 1 0, is to provide ample seating seat 1l and widely open the intake openings suilfa'fe l1, while at the saine time allowing l2; while Fig. 2 shows said valve opened sulhcunt space betweep the periphery of the only about halfas far asthis. Assoou as said rlappir valve and the interior of the passage valves begin to descend and the puppet lt' for the iuialie of the i-harge, Ofcourse, valve 3 uncovers the port or seat 4, the ex au equal .scat can be obtained by making .the hnust gases from the cylinder rush there walls ofthe barrel quite thieleor by iving from out through said port and through the the barrel an interior flange. The orrner exhaust conduit l5, until, by the tiino the l construction is olneelionahle heraus@ of its responds to the chipper lvalve 13 is rigidA considerably increased Weight and its Consequent increased Wear and tear on the operating machinery and upon its seat 11; While the latter construction is objectionable because of the increased retardation thereby given to the intake of the charge.

At first thought it seemed impossible to assemble a valve wherein the barrel had an outwardly projecting flange at its inner end, since the upper part of the barrel must snugly but slidably fitthe cylindrical surface having the ports l2. By making Said cylindrical surface in a sleeve 17 integral with the cap 19, l eventually found thisV could be donc, said sleeve being constructed to enter air-iight the opening provided for it in the valve body or easing. In addition to the possible premature ignition of the charge in the cylinder, is the more common danger of `an after-tire in the exhaust. While this may not cause an explosion in the carburetor, it disturbs and injures the mixture in the manifold, or intake chamber, and prcduces a inislire in one or more of the cylinders4 of a unilieylinder engine. Another advantage resulting from having the clapper valve, or intake valve 13, loose upon the valve stem :3, instead of rigid thereon, as in some constrxuftions, is the better engagement with its scat thereby permitted.

lVhat l claim is:

l. A valve for internal combustion engines comprising a valve casing having a seat, a puppet valve enacting therewith having a stern and means for reciprocating said stein, a barrel valve slidalily supported by said stern and resiliently pressed toward the puppet valve1 a member having a cylindrical upper part of t surface slidably surrounding the rvbarrel an intake port above the e barrel valve, a seat eo acting with the lower end of the barrel valve and communicating with theexhaust con duit` and a clapper valve coating 'viiith the lower end of the barrel valve and slidably carried by said stem, said clapper valve being free to slide upward on said stem when the pressure thereon given vby the barrel valve is removed.

2. A valve for internal Combustion engines comprisingr a ,valve casinghaving a seat, a puppet valve coacting therewith hav4 ing a stem and means for reciprocatingr the same, a barrel valve slidably supported on valve and havin said stem and rcsiliently pressed toward the puppet valve, said barrel valve having an outwardly projecting flange at its lower end, a screw cap for said easing having a sleeve tightly fitting the interior of said casing and having its inner Surface slidably contacting with the exterior of'the barrel valve, said sleeve havin one or moreports for the admission of tlie charge, said easing having a Aseat communicating with. the exhaust. con

duit and `eoactin with Said flange, and a -elappei: valve sli( able on said valve and eoacting with the lOWer endhof -thebarrel valve. u l A In testimony that I claim the foregoinpr invention, I have hereunto set my h and this 10th da)7 of September, 1913.

. .SAMUEL UPTON.

Witnesses: A. B. UPHAM,

HARRY SInvnn`MA1v.

ACorrection in Letters Patent No. 1.,()1,5 90,n

It ill; hereby crticd that Lctters-Pateht N. 1,101,590, granted Ju-ne 30, 1 914, upon the u'pplicutjgn of'Samuel Upton, )f Arlihgton Hfeghts; Mnssacl'nqstftgglfq;

au improvement in Valves for IntnrnalLCombstiorg 4Engines,T1 were crrh'equsly issued tu Simon 1. MzLcAn-kill as :issigncc of thc entire ith/Option, whercm: smid zllettelrs l Y. .c ,xi r Iltent should have havn issued to the nwc'nt/JkavJ [./pon 'wand Simon P.

shown hy the mm1-ds of waignmcnfh in thisofiecl; *11ndT lhat thehaid V should bc mad with Lhis corrrtclin therein that the sgm lr-layconfohh tu the:

icc'ord of the wh@ in the latnt Olc,

i i 'u' .Acting Comnzssw/Lw' of Patents. 

